669584956 has 6 divisors (see below), whose sum is σ = 1171773680. Its totient is φ = 334792476.

The previous prime is 669584953. The next prime is 669584957. The reversal of 669584956 is 659485966.

It is a self number, because there is not a number n which added to its sum of digits gives 669584956.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (669584953) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83698116 + ... + 83698123.

Almost surely, 2^669584956 is an apocalyptic number.

It is an amenable number.

669584956 is a deficient number, since it is larger than the sum of its proper divisors (502188724).

669584956 is a wasteful number, since it uses less digits than its factorization.

669584956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167396243 (or 167396241 counting only the distinct ones).

The product of its digits is 13996800, while the sum is 58.

The square root of 669584956 is about 25876.3396947868. The cubic root of 669584956 is about 874.8532895794.

The spelling of 669584956 in words is "six hundred sixty-nine million, five hundred eighty-four thousand, nine hundred fifty-six".